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Wgu D315 2026 Data Management Principles Review Manual

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WGU D315 2026 DATA MANAGEMENT PRINCIPLES REVIEW MANUAL

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WGU D315 2026 DATA MANAGEMENT
PRINCIPLES REVIEW MANUAL

◉Which OSI layer is organizing the bits over the physical layer
between devices in the same collision domain?. Answer: Data Link 2
- They are in the same Frame


◉Which OSI layer is a Switch at?. Answer: Data Link 2


◉Which OSI layer is a WAP (Wireless Access Point) at?. Answer:
Data Link 2


◉Which OSI layer is a router at. Answer: Network (3)


◉TCP protocol is on what OSI layer. Answer: Transport (4)


◉OSI layer 1. Answer: Physical Layer (Cable, Hubs, Repeaters)


◉OSI layer 2. Answer: Data Link Layer (Frame, Switch, PPP,
Ethernet)


◉OSI layer 3. Answer: Network Layer (Moves packets, IP)

, ◉OSI layer 4. Answer: Transport Layer (TCP, end to end connection)


◉OSI Layer 5. Answer: Session Layer (API, Sockets, Synch and send
to port)


◉OSI layer 6. Answer: Presentation layer (Syntax and encryption
layer, SSL, SSH, JPEG)


◉OSI layer 7. Answer: Application layer (end user layer, http,
applications)


◉Network Typology point to point. Answer: Two devices connect
directly


◉Network Typology bus. Answer: All devices connect to a central
main line


◉Network Typology Ring. Answer: All devices have two connections
and form an endless ring


◉Network Typology Star. Answer: All devices connect to a central
point

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